WO2022121680A1 - Procédé et appareil de détermination de décalage de fenêtre, terminal et dispositif de réseau - Google Patents

Procédé et appareil de détermination de décalage de fenêtre, terminal et dispositif de réseau Download PDF

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Publication number
WO2022121680A1
WO2022121680A1 PCT/CN2021/132472 CN2021132472W WO2022121680A1 WO 2022121680 A1 WO2022121680 A1 WO 2022121680A1 CN 2021132472 W CN2021132472 W CN 2021132472W WO 2022121680 A1 WO2022121680 A1 WO 2022121680A1
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Prior art keywords
information
terminal
current
mapping relationship
timing advance
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PCT/CN2021/132472
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English (en)
Chinese (zh)
Inventor
雷珍珠
赵思聪
周化雨
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展讯半导体(南京)有限公司
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Priority to US18/256,296 priority Critical patent/US20240040527A1/en
Priority to EP21902387.6A priority patent/EP4258777A1/fr
Publication of WO2022121680A1 publication Critical patent/WO2022121680A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18519—Operations control, administration or maintenance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method and apparatus for determining a window offset, a terminal, and a network device.
  • the 3rd Generation Partnership Project (3GPP) is developing protocol standards for non-terrestrial network (NTN) communications, and the protocol standards mainly involve spaceborne vehicles or airborne equipment.
  • airborne vehicle such as geostationary earth orbit satellites, low earth orbit satellites, highly elliptical orbit satellites, high-altitude platform stations (HAPS), etc.
  • the satellites in the NTN communication system usually generate beams (beams, or beam footprints) or cells on the ground, and the satellites move continuously along a fixed orbit, they are located in the above beams. Or the propagation distance (or propagation delay) between the terminal in the cell and the satellite will change with the position of the satellite, which will cause the terminal to delay starting the preconfigure uplink resource (PUR) every time.
  • the duration (ie offset) of the corresponding downlink search space window (PUR searchspacewindow, PUR SS Window) will also change continuously. In this case, how to determine the offset of each delay to start the PUR SS Window requires further research.
  • the embodiments of the present application provide a method and apparatus for determining a window offset, a terminal, and a network device, so as to realize the adaptive adjustment of the offset of the downlink search space window corresponding to the preconfigured uplink resource between the network device and the terminal, And always ensure that the network device and the terminal reach an agreement on the offset.
  • an embodiment of the present application provides a method for determining a window offset, which is applied to a terminal in a non-terrestrial network communication system, where the non-terrestrial network communication system includes the terminal and a network device; the method includes:
  • the current window offset is determined according to the first configuration information, where the current window offset is used to indicate the offset of the downlink search space window corresponding to the currently preconfigured uplink resource that is delayed from the start time, and the start The moment is the end position of the currently preconfigured uplink resource.
  • an embodiment of the present application provides a method for determining a window offset, which is characterized in that it is applied to a network device in a non-terrestrial network communication system, where the non-terrestrial network communication system includes the network device and a terminal;
  • the methods described include:
  • Send first configuration information to the terminal where the first configuration information is used to determine a current window offset, and the current window offset is used to indicate that the downlink search space window corresponding to the currently preconfigured uplink resource starts at the start time
  • the offset of the delayed start, and the start time is the end position of the currently pre-configured uplink resource.
  • an embodiment of the present application provides an apparatus for determining a window offset, which is applied to a terminal in a non-terrestrial network communication system, where the non-terrestrial network system includes the terminal and a network device; the apparatus includes a processing unit and A communication unit, the processing unit is used for:
  • the current window offset is determined according to the first configuration information, where the current window offset is used to indicate the offset of the downlink search space window corresponding to the currently preconfigured uplink resource that is delayed from the start time, and the start The moment is the end position of the currently preconfigured uplink resource.
  • an embodiment of the present application provides an apparatus for determining a window offset, which is applied to a network device in a non-terrestrial network communication system, where the non-terrestrial network communication system includes the network device and a terminal; the apparatus includes a processing unit and communication unit, the processing unit is used for:
  • the window is delayed and started by an offset starting time, where the starting time is the end position of the currently preconfigured uplink resource.
  • an embodiment of the present application provides a terminal, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured by the The program is executed by the processor, and the program includes instructions for executing steps in any of the methods in the first aspect of the embodiments of the present application.
  • embodiments of the present application provide a network device, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured by Executed by the processor, the program includes instructions for executing steps in any of the methods in the second aspect of the embodiments of the present application.
  • an embodiment of the present application provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the first aspect or the second aspect of the embodiment of the present application Some or all of the steps described in any method.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes a computer to execute the implementation of the present application Examples include some or all of the steps described in any of the methods of the first aspect or the second aspect.
  • an embodiment of the present application provides a computer program, wherein the computer program is operable to cause a computer to execute part or all of the steps described in any of the methods in the first aspect or the second aspect of the embodiments of the present application .
  • the computer program may be a software installation package.
  • the network device in the non-terrestrial network communication system sends the first configuration information to the terminal in the non-terrestrial network communication system; then, the terminal acquires the first configuration information, and according to the first configuration information to determine the current window offset.
  • the current window offset is used to indicate the offset of the downlink search space window corresponding to the currently preconfigured uplink resource with the start time delay, and the start time is the end position of the current preconfigured uplink resource, it is beneficial to ensure that the terminal
  • the offset of the downlink search space window will be adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite each time the delay starts, so as to realize the adaptation of the offset of the downlink search space window between the network equipment and the terminal Adjust, and always ensure that the network device and the terminal reach an agreement on the offset of the downlink search space window.
  • FIG. 1 is a schematic diagram of the architecture of a non-terrestrial network communication system provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of the architecture of a transparent satellite communication system provided by an embodiment of the present application.
  • Fig. 3 is a kind of terrestrial network communication system provided in the embodiment of the present application and the non-terrestrial network communication system The structural representation of comparing signal reception quality;
  • FIG. 4 is a schematic structural diagram of an earth fixed beam scenario of a non-terrestrial network communication system provided by an embodiment of the present application;
  • FIG. 5 is a schematic diagram of an architecture comparison of a non-terrestrial network communication system provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of an offset of a downlink search space window corresponding to a preconfigured uplink resource provided by an embodiment of the present application;
  • FIG. 7 is a schematic flowchart of a method for determining a window offset provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of another method for determining a window offset provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of another method for determining a window offset provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a mapping relationship between multiple RUR transmission resource blocks and multiple window offsets provided by an embodiment of the present application
  • FIG. 11 is a schematic flowchart of another method for determining a window offset provided by an embodiment of the present application.
  • FIG. 12 is a schematic flowchart of another method for determining a window offset provided by an embodiment of the present application.
  • FIG. 13 is a schematic flowchart of another method for determining a window offset provided by an embodiment of the present application.
  • FIG. 14 is a block diagram of functional units of a window offset determination device provided by an embodiment of the present application.
  • 15 is a block diagram of functional units of another window offset determination device provided by an embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • non-terrestrial network non-terrestrial network
  • NTN non-terrestrial network
  • the non-terrestrial network communication system 10 may include a terminal 110 , an intra-cell reference point 120 , a satellite 130 , a non-terrestrial network gateway (NTN gateway) 140 and a network device 150 .
  • the terminal 110, the non-terrestrial network gateway 140 and the network device 150 may be located on the earth's surface, while the satellite 130 is located in the earth's orbit.
  • the satellites 130 can provide communication services to the geographic area covered by the signal, and can communicate with the terminals 110 located within the signal coverage area.
  • the terminal 110 is located in a certain cell, and the cell includes an intra-cell reference point 120 .
  • the wireless communication link between the terminal 110 and the satellite 130 is called a service link
  • the wireless communication link between the satellite 130 and the non-terrestrial network gateway (NTN gateway) 140 is called a supply link ( feeder link).
  • NTN gateway non-terrestrial network gateway
  • the network device 150 may be integrated into the same device, or may be separate devices, which are not specifically limited.
  • the terminal in this embodiment of the present application may be a user equipment (user equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a smart Terminal, wireless communication device, user agent or user equipment.
  • UE user equipment
  • an access terminal a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a smart Terminal, wireless communication device, user agent or user equipment.
  • the terminal may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication function handheld devices, computing devices or other processing devices connected to wireless modems, relay devices, in-vehicle devices, wearable devices, terminals in next-generation communication systems such as NR networks or future evolution of public land mobile communication networks network, PLMN), etc., which are not specifically limited.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the terminal can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle; can be deployed on water (such as ships, etc.); can also be deployed in the air (such as aircraft, balloons and satellites, etc.).
  • the terminal may be a mobile phone (mobile phone), a tablet computer, a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an industrial control (industrial control) wireless terminal equipment in , autonomous driving (self driving) in-vehicle equipment, remote medical (remote medical) wireless terminal equipment, smart grid (smart grid) wireless terminal equipment, transportation safety (transportation safety) in Wireless terminal equipment, wireless terminal equipment in a smart city or wireless terminal equipment in a smart home, etc.
  • VR virtual reality
  • AR augmented reality
  • industrial control wireless terminal equipment in autonomous driving (self driving) in-vehicle equipment
  • remote medical remote medical
  • smart grid smart grid wireless terminal equipment
  • transportation safety transportation safety
  • the satellite in the embodiment of the present application may be a spacecraft carrying a bent pipe payload or a regenerative payload signal transmitter, which usually operates at an altitude between 300 and 1500 km.
  • Low Earth Orbit (LEO) Low Earth Orbit (LEO) at altitudes between 7000 and 25000km
  • High elliptical orbit (HEO) at altitudes between 50,000km.
  • the satellites may be LEO satellites, MEO satellites, GEO satellites, or HEO satellites, etc. according to different orbital altitudes.
  • the signals sent by the satellites in the embodiments of the present application generally generate one or more beams (beams, or referred to as “given service areas”) on a given service area (given service area) bounded by its field of view (field of view).
  • beams beams, or referred to as “given service areas”
  • given service area bounded by its field of view (field of view).
  • beam footprint the shape of a beam on the ground can be elliptical, and the field of view of the satellite depends on the antenna and the minimum elevation angle, etc.
  • the non-terrestrial network gateway in this embodiment of the present application may be an earth station or gateway located on the earth's surface, and can provide enough radio frequency (RF) power and RF sensitivity to connect satellites.
  • the non-terrestrial network gateway may be a transport network layer (TNL) node.
  • RF radio frequency
  • TNL transport network layer
  • the network device in the embodiment of the present application may be a base station (base transceiver station) in a global system of mobile communication (GSM) communication system or a code division multiple access (code division multiple access, CDMA) communication system.
  • BTS base stations
  • nodeB, NB wideband code division multiple access
  • WCDMA wideband code division multiple access
  • evolutional node B, eNB in long term evolution (long term evolution, LTE) communication systems or eNodeB) or a base station (gNB) in a new radio (NR) communication system.
  • the network device may also be an access point (access point, AP) in a wireless local area network (WLAN), a relay station, a network device in a future evolved PLMN network, or a network device in an NTN communication system, and the like.
  • WLAN wireless local area network
  • relay station a network device in a future evolved PLMN network
  • NTN communication system and the like.
  • the gNB may include a centralized unit (CU) and a distributed unit (DU), and the gNB may also include an active antenna unit (AAU) .
  • the CU can implement part of the functions of the gNB, and the DU can also implement part of the functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services, implementing the functions of the radio resource control (RRC) layer and the packet data convergence protocol (PDCP) layer;
  • the DU is responsible for processing physical layer protocols and real-time services.
  • RLC radio link control
  • MAC medium access control
  • PHY physical
  • the AAU implements some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, the higher-layer signaling (such as the RRC layer signaling) can be considered to be sent by the DU, or by the DU+AAU sent.
  • the network device may include one or more devices of a CU node, a DU node, and an AAU node.
  • the CU may be divided into network devices in an access network (radio access network, RAN), and the CU may also be divided into network devices in a core network (core network, CN), which is not specifically limited.
  • an embodiment of the present application provides a schematic diagram of the architecture of a communication system with a transparent satellite (transparent satellite), as shown in FIG. 2 .
  • terminals, non-terrestrial network gateways and gNBs are located on the earth's surface, while satellites are located in earth orbit.
  • satellites, non-terrestrial network gateways and gNBs can act as 5G radio access network (NG-radio access network, NG-RAN), and NG-RAN is connected to 5G core network through NG interface.
  • NG-radio access network NG-radio access network
  • NG-RAN 5G radio access network
  • NG-RAN 5G radio access network
  • NG-RAN 5G radio access network
  • NG-RAN 5G core network
  • the satellite payload implements frequency conversion and RF amplifiers in both uplink and downlink directions, and the satellite corresponds to an analog RF repeater.
  • different transparent satellites can be connected to the same gNB on the ground.
  • the satellite In the NTN communication system, the satellite usually generates one or more beams (beam, or called beam footprint) or cells on the ground, and the shape of a beam on the ground can be an ellipse.
  • the beams or cells generated on the ground by some satellites (such as LEO satellites) will also move on the ground with the movement of the satellites in their orbits; or, some satellites (such as LEO satellites or GEO satellites) are on the ground.
  • the resulting beam or cell does not move on the ground as the satellite moves in its orbit.
  • the difference in propagation distance between terminals (such as UE) in different geographical locations and the satellite is small ( That is, the path loss difference of signals corresponding to terminals in different geographical locations within the coverage of the same beam/cell is small), which in turn leads to the signal reception quality (including the terminal) corresponding to terminals in different geographical locations within the coverage of the same beam/cell
  • the difference of the downlink reception quality of the base station or the uplink reception quality of the base station is very small, as shown in Figure 3.
  • the beams (or beam footprints) or cells generated by some satellites (such as LEO satellites or GEO satellites) on the ground do not will move on the ground as the satellite moves in its orbit, as shown in Figure 4.
  • the beam 420 generated on the ground by the satellite 410 does not move with the movement of the satellite 410, but assumes a fixed position.
  • the architecture of the NTN communication system in the embodiment of the present application mainly includes an NTN communication architecture (ie, a transparent forwarding mode) with a transparent satellite (or called bent pipe payload) and a regenerative satellite (regenerative satellite). ) of the NTN communication architecture (i.e. regenerative signal mode), see Figure 5.
  • NTN communication architecture i.e. regenerative signal mode
  • FIG. 5 illustrates the NTN communication architecture with transparent satellites
  • FIG. 5 illustrates the NTN communication architecture with regenerative satellites.
  • the satellite 510 in the transparent repeater mode generates at least one beam 520 on the ground, and the at least one beam 520 can form a cell on the ground.
  • the terminal 530 located in the cell can measure one beam among all the beams in the cell, and establish a communication connection with the satellite 510 through the beam.
  • the satellite 540 regenerating the signal pattern generates at least one beam 550 on the ground, and the at least one beam 550 can form a cell on the ground.
  • the terminal 560 located in the cell can measure one beam among all the beams of the cell, and establish a communication connection with the satellite 540 through the beam.
  • Timing advance (TA) in NTN communication system 4. Timing advance (TA) in NTN communication system
  • the propagation delay (or propagation distance) between the terminal and the satellite and the propagation between the satellite and the network device (or non-terrestrial network gateway)
  • the time delay (or propagation distance) changes rapidly with the constant motion of the satellite.
  • the terminal needs to perform TA pre-compensation (ie, TA adjustment).
  • a part of the compensation value can be calculated by the terminal through its own location information (for example, calculated by the global navigation satellite system) and satellite ephemeris (satellite ephemeris), and another part of the compensation value can be calculated by the terminal according to the network instruction
  • the common timing advance rate is calculated. It should be noted that the common timing advance has an associated relationship with the position of the satellite, that is, the common timing advance has an associated relationship with the propagation distance from the satellite to the terminal.
  • a terminal in an idle (idle) state or in an inactive state (inactive) needs to enter a connected state through a random access procedure before sending data.
  • This idle/inactive data transmission mechanism will increase RRC signaling overhead, UE energy consumption, or data transmission delay.
  • the processing mechanism in narrow-band internet of things (NB-IoT) or enhanced machine-type communication (eMTC) is that the network configures the terminal through the network.
  • Periodic PUR and downlink search space window PUR searchspacewindow, PUR SS Window
  • the terminal can receive confirmation ACK feedback information, fallback indication information, or retransmission scheduling information through the PUR SS Window corresponding to the PUR.
  • the terminal can determine the start time of the PUR SSwindow according to the offset.
  • the terminal due to the large propagation distance (or propagation delay) between the satellite and the terminal in the NTN communication system, after the terminal sends the uplink data through the PUR, it needs to delay the activation of the PUR corresponding to the terminal.
  • the PUR SS window so as to ensure that the relevant information issued by the network device is received within the running time of the PUR SS window.
  • the duration (ie the offset) of the terminal delaying to start the PUR SS window will also continue to change, which will cause the network The problem that the device and the terminal cannot agree on the offset.
  • an embodiment of the present application provides a schematic flowchart of a method for determining a window offset, which is applied to a non-terrestrial network communication system, please refer to FIG. 7 .
  • the method includes:
  • the network device sends the first configuration information to the terminal.
  • the first configuration information may be used to determine the current window offset, and the current window offset may be used to indicate the offset of the downlink search space window corresponding to the currently preconfigured uplink resource that is delayed from the start time, the The start time may be the end position of the currently pre-configured uplink resources.
  • the technical solutions in the embodiments of the present application are applicable to both the transparent forwarding mode and the regeneration signal mode.
  • the transparent forwarding mode the first configuration information is sent by the network device located on the ground.
  • the regenerative signal mode since the network device is located at the satellite, the first configuration information is sent by the network device located at the satellite.
  • the current window offset in the embodiments of the present application can be understood as the first window offset, and the “first” and “second” in the embodiments of the present application are used to distinguish different objects, while Not intended to describe a specific order.
  • the propagation between the terminal located in the beam or the cell and the satellite is The distance (or propagation delay) will change continuously with the position of the satellite, so that the offset of the PUR SS Window corresponding to each time the terminal delays starting the PUR will also change continuously.
  • the embodiment of the present application considers that the network device sends the first configuration information to the terminal, and the terminal determines the offset of the current PUR SS Window according to the first configuration information, thereby ensuring that the terminal delays the start of the PUR SS Window offset each time
  • the amount will be adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite, realizing the adaptive adjustment of the offset of the PUR SS Window between the network device and the terminal, and always ensuring that the network device and the terminal are in Agree on the offset of the PUR SS Window.
  • the unit of the current window offset may be one of milliseconds (ms), subframe (subframe), frame (frame), and time slot (slot), which is not specifically limited.
  • the first configuration information may be indicated by at least one of RRC dedicated signaling, media access control element (MAC control element, MAC CE), and system broadcast information.
  • RRC dedicated signaling media access control element (MAC control element, MAC CE)
  • MAC control element media access control element
  • system broadcast information MAC control element
  • the embodiment of the present application considers that the network device sends the first configuration information to the terminal through at least one of RRC dedicated signaling, MAC CE, and system broadcast information to realize the adaptive adjustment of the PUR SS Window corresponding to the current PUR. .
  • system broadcast information may include system information block (system information block, SIB) information.
  • SIB system information block
  • the terminal acquires the first configuration information from the network device.
  • the terminal determines the current window offset according to the first configuration information.
  • the network device in the non-terrestrial network communication system sends the first configuration information to the terminal in the non-terrestrial network communication system; then, the terminal acquires the first configuration information, and according to the first configuration information to determine the current window offset.
  • the current window offset is used to indicate the offset of the downlink search space window corresponding to the currently preconfigured uplink resource with the start time delay, and the start time is the end position of the current preconfigured uplink resource, it is beneficial to ensure that the terminal
  • the offset of the downlink search space window will be adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite each time the delay starts, so as to realize the adaptation of the offset of the downlink search space window between the network equipment and the terminal Adjust, and always ensure that the network device and the terminal reach an agreement on the offset of the downlink search space window.
  • the first configuration information may include one of the following: starting value index information and value validating delay information, first mapping relationship information, current common timing advance, and current common timing advance change rate .
  • the starting value index (index) information can be used to determine the target value in the value list information, and the value list information is configured by the network; the value validating delay information can be used to instruct the terminal to use the target value as the target value.
  • the delay of the current window offset; the value list (list) information can be used to indicate a list composed of multiple window offsets (ie, at least two window offsets) in sequence.
  • the first configuration information includes initial value value index information and value value validation delay information.
  • the value list information can be used to indicate a list composed of multiple window offsets in sequence, and the values in the value list information can be used to represent the window offsets among the multiple window offsets, the terminal
  • the target value in the value list information can be determined according to the starting value index information, and then the target value can be used as the current window offset according to the value validating delay information. Since both the first configuration information and the value list information are configured by the network device, it is further ensured that the offset of the downlink search space window every time the terminal delays starting the downlink search space window will be adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite. , realizes the adaptive adjustment of the offset of the downlink search space window between the network device and the terminal, and always ensures that the network device and the terminal reach an agreement on the offset of the downlink search space window.
  • the value list information can satisfy at least one of the following ways: the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system, and the value in the value list information is between the values.
  • the arrangement order of the satellites has a corresponding relationship with the motion position of the satellites.
  • the embodiment of the present application considers the position of the terminal to be approximately fixed for a period of time, and mainly analyzes the constant change of the propagation distance between the terminal and the satellite caused by the position change of the satellite.
  • the embodiment of the present application considers that the network device determines the propagation between the terminal and the satellite according to the running track of the satellite and the current position of the terminal. The set of distances, and then determine each value in the value list information according to the set of propagation distances, thereby establishing a mapping relationship between the propagation distance between the terminal and the satellite and the values in the value list information.
  • the arrangement order of the values in the value list information has a corresponding relationship with the operating positions of the satellites, and the corresponding relationship may be in one-to-one correspondence.
  • the first mapping relationship information may be used to indicate the mapping relationship between the propagation distance from the terminal to the satellite in the non-terrestrial network communication system and the window offset.
  • the network device determines the set of propagation distances between the terminal and the satellite according to the running trajectory of the satellite and the current position of the terminal, and then establishes the set of propagation distances and multiple window offsets.
  • the mapping relationship between them is to obtain the first mapping relationship information, so that the terminal determines the current window offset according to the first mapping relationship information, and further ensures that the offset of the downlink search space window every time the terminal delays starting the downlink search space window will follow the terminal and the terminal.
  • the propagation distance between satellites is constantly changing and adaptively adjusted, so as to realize the adaptive adjustment of the offset of the downlink search space window between the network equipment and the terminal, and always ensure the downlink search space window between the network equipment and the terminal. Agree on offsets.
  • the current common timing advance can be used to determine the current window offset from the second mapping relationship information, and the second mapping relationship information is configured by the network; the rate of change of the current common timing advance can be used to determine the current common timing advance ;
  • the second mapping relationship information may be used to indicate the mapping relationship between the common timing advance and the window offset.
  • the mapping relationship may be that an interval of a common timing advance corresponds to a window offset.
  • the terminal may determine the current window offset from the second mapping relationship information according to the current common timing advance.
  • the terminal may determine the current common timing advance according to the rate of change of the current common timing advance, and then determine the current window offset from the second mapping relationship information according to the current common timing advance.
  • both the first configuration information and the second mapping relationship information are configured by the network device, it is further ensured that the offset of the downlink search space window every time the terminal delays starting the downlink search space window will be adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite , realizes the adaptive adjustment of the offset of the downlink search space window between the network device and the terminal, and always ensures that the network device and the terminal reach an agreement on the offset of the downlink search space window.
  • the method may further include the following steps: the network device Send first information to the terminal, where the first information includes value list information.
  • the method may further include the following steps: the terminal Obtain first information from the network device, where the first information includes value list information.
  • the first information may be indicated by system broadcast information or RRC dedicated signaling.
  • the network device sends the first information to the terminal through system broadcast information or RRC dedicated signaling to obtain value list information, that is, sends the first information to the terminal through system broadcast information or RRC dedicated signaling. Indicates or configures value list information.
  • system broadcast information may include SIB information.
  • the terminal determines the current window offset according to the first configuration information, which may include the following steps: the terminal determines the target value from the value list information according to the initial value index information; After the message times out, the terminal takes the target value as the current window offset.
  • the terminal can use the initial value index information to index the value of the corresponding position from the value list information to obtain the target value, so that the target value is used as the current window offset.
  • this embodiment of the present application also considers the information on the validating delay information configured by the network device.
  • the effective delay information of the value can effectively reflect the position change of the satellite, and after the effective delay information of the value expires, the terminal will use the target value as the current window offset, thereby further ensuring that the terminal delays each time
  • the offset of starting the downlink search space window will be adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite, so as to realize the adaptive adjustment of the offset of the downlink search space window between the network device and the terminal, and Always ensure that the network device and the terminal reach an agreement on the offset of the downlink search space window.
  • the terminal determines the current window offset according to the initial value index information, the value effective delay information and the value list.
  • the embodiments of the present application also consider how to implement a technical solution for updating the current window offset, which will be specifically described below through two sub-scenarios.
  • the first information may further include update period information; the update period information may be used to indicate that the terminal updates the current window offset to the next value where the target value is located at the location of the value list information The period starts from the time when the value of the effective delay information times out.
  • the network device can configure or indicate the value list information and the update period information to the terminal at the same time. At this time, the terminal may periodically update the current window offset by updating the period information.
  • the unit of the period may be one of milliseconds (ms), subframe (subframe), frame (frame), and time slot (slot), which is not specifically limited.
  • ms milliseconds
  • subframe subframe
  • frame frame
  • slot time slot
  • the method further includes the following steps: sending first indication information to the terminal through the MAC CE, where the first indication information is used to instruct the terminal to offset the current window The quantity is updated to the next value where the target value is located in the value list information.
  • the method further includes the following steps: the terminal receives the MAC CE from the network device to obtain the first indication information, and the first indication information is used for Instructs the terminal to update the current window offset to the next value where the target value is located in the value list information.
  • the network device instructs the terminal to update the current window offset by delivering the MAC CE.
  • the network device sends the first information to the terminal through system broadcast information or RRC dedicated signaling.
  • the first information includes value list information and update cycle information.
  • the network device sends the first configuration information to the terminal through RRC dedicated signaling or MAC CE.
  • the first configuration information includes initial value index information and value validation delay information.
  • the terminal receives the broadcast information or RRC dedicated signaling from the network equipment system to obtain the first information.
  • the first information includes value list information and update cycle information.
  • the terminal receives RRC dedicated signaling or MAC CE from the network device to obtain the first configuration information.
  • the first configuration information includes initial value index information and value validation delay information.
  • the terminal determines the target value from the value list information according to the starting value index information, and takes the target value as the current window offset after the time-out of the value validating delay information.
  • the terminal updates the current window offset to the next value where the target value is located at the location of the value list information according to the update period information.
  • method 1 can be exemplified as the process shown in FIG. 8 .
  • the network device sends the first information to the terminal through system broadcast information or RRC dedicated signaling.
  • the first information includes value list information.
  • the network device sends the first configuration information to the terminal through RRC dedicated signaling or MAC CE.
  • the first configuration information includes initial value index information and value validation delay information.
  • the network device sends the first indication information to the terminal through the MAC CE.
  • the terminal obtains the first information from the network device through system broadcast information or RRC dedicated signaling.
  • the first information includes value list information.
  • the terminal obtains the first configuration information from the network device through RRC dedicated signaling or MAC CE; wherein, the first configuration information includes initial value index information and value validation delay information.
  • the terminal determines the target value from the value list information according to the initial value index information, and uses the target value as the current window offset after the value validation delay information times out.
  • the terminal receives the MAC CE from the network device to obtain the first indication information, and according to the first indication information, updates the current window offset to the next value of the target value at the location of the value list information.
  • mode 2 can be exemplified as the process shown in FIG. 9 .
  • Example 1 The terminal obtains the value list information from the network device through system broadcast information or RRC dedicated signaling as ⁇ K1, K2, K3, K4, K5 ⁇ and the update period information as X subframes. Secondly, the terminal obtains the initial value index information from the network device through RRC dedicated signaling or MAC CE as 2 and the value effective delay information as Y subframes. Thirdly, the terminal obtains the target value K2 from the value list information through the initial value index information, and uses K2 as the front window offset after Y subframes time out.
  • the terminal starts from the time after the time-out of the time-out of the value-effective delay information, and after X subframes, updates the current window offset to K2 below the position of ⁇ K1, K2, K3, K4, K5 ⁇
  • K3 the terminal can start with K2 and update the next value in turn every X subframes, that is, the first X subframe is K2, the second X subframe is K3, and so on .
  • Example 2 The terminal obtains the value list information from the network device through system broadcast information or RRC dedicated signaling as ⁇ K1, K2, K3, K4, K5 ⁇ . Secondly, the terminal obtains the initial value index information from the network device through RRC dedicated signaling or MAC CE as 2 and the value effective delay information as Y subframe. Thirdly, the terminal obtains the target value K2 from the value list information through the initial value index information, and uses K2 as the current window offset after the Y subframe times out. Finally, the terminal obtains the first indication information through the MAC CE for the first time, and according to the first indication information, updates the current window offset to the next value of K2 at the location of ⁇ K1, K2, K3, K4, K5 ⁇ K3. It should be noted that when the terminal obtains the first indication information through the MAC CE for the second time, the terminal updates K3 to K4, and so on.
  • the method may further include the following step: the network device sends the first configuration information for PUR transmission to the terminal.
  • Second configuration information the second configuration information may include PUR transmission period information, resource configuration information of PUR transmission occasions, and mapping relationship information between PUR transmission resource blocks and the number of window offsets.
  • the method further includes the following steps: the terminal acquires the first configuration information from the network device for PUR transmission.
  • Second configuration information the second configuration information includes PUR transmission period information, resource configuration information of PUR transmission occasions, and mapping relationship information between PUR transmission resource blocks and window offsets.
  • the PUR transmission period information may be used to indicate the period of PUR transmission.
  • the resource configuration information of the PUR transmission occasion may be used to indicate multiple RUR transmission resource blocks configured in the PUR transmission occasion.
  • the multiple PUR transmission resource blocks may be distinguished by time division or frequency division.
  • mapping relationship information between the PUR transmission resource blocks and the window offsets may be used to indicate the mapping relationship between multiple RUR transmission resource blocks and multiple window offsets configured at the PUR transmission opportunity.
  • the mapping relationship may be that each of the multiple RUR transmission resource blocks corresponds to one of the multiple window offsets.
  • PUR transmission resource block 1010 is 1 subframe
  • PUR transmission resource block 1020 is 2 subframes
  • the window offset corresponding to the PUR transmission resource block 1030 is 3 subframes
  • the window offset corresponding to the PUR transmission resource block 1040 is 4 subframes.
  • the second configuration information may be indicated by RRC dedicated signaling.
  • the network device sends the second configuration information to the terminal through RRC dedicated signaling to obtain the PUR transmission period information, the resource configuration information of the PUR transmission opportunity, and the difference between the PUR transmission resource block and the window offset. information about the mapping relationship between them.
  • the terminal determines the current window offset according to the first configuration information, which may include the following steps: the terminal acquires first propagation distance information, and the first propagation distance information may be used to indicate the difference between the current location information of the terminal and the satellite. The terminal determines the current window offset from the first mapping relationship information according to the first propagation distance information.
  • the terminal can use the first propagation distance information to index the corresponding window offset from the first mapping relationship information as the current window offset, thereby further ensuring that the terminal delays starting the downlink search space window every time.
  • the offset will be adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite, realizing the adaptive adjustment of the offset of the downlink search space window between the network equipment and the terminal, and always ensuring that the network equipment and the terminal are Agree on the offset of the downlink search space window.
  • acquiring the first propagation distance information by the terminal may include the following steps: the terminal acquires current location information; and the terminal calculates and obtains the first propagation distance information according to the current location information and the preset satellite ephemeris.
  • the terminal can obtain the current location information through its own global navigation satellite system (GNSS) calculation, and then calculate its current location and satellites through the current location information and the preset satellite ephemeris. distance between them.
  • GNSS global navigation satellite system
  • the method may further include the following steps: the terminal determines the current window offset according to the second configuration information and the current window offset Determine the current PUR transmission resource block, and perform uplink data transmission through the current PUR transmission resource block.
  • the terminal can use the current window offset to index the corresponding PUR transmission resource block from the mapping relationship information as the current PUR transmission resource block, so as to perform uplink data transmission through the current PUR transmission resource block to realize PUR transmission.
  • the network device in “situation 1" can also be used to instruct the terminal to update the current window offset by delivering the MAC CE, which will not be repeated here.
  • the network device sends the second configuration information for PUR transmission to the terminal through RRC dedicated signaling.
  • the second configuration information includes PUR transmission period information, resource configuration information of PUR transmission occasions, and mapping relationship information between PUR transmission resource blocks and window offsets.
  • the network device sends the first configuration information to the terminal through RRC dedicated signaling or MAC CE.
  • the first configuration information includes first mapping relationship information.
  • the terminal receives the RRC dedicated signaling from the network device to obtain the second configuration information for PUR transmission.
  • the second configuration information includes PUR transmission period information, resource configuration information of PUR transmission occasions, and mapping relationship information between PUR transmission resource blocks and window offsets.
  • the terminal receives RRC dedicated signaling or MAC CE from the network device to obtain the first configuration information.
  • the first configuration information includes first mapping relationship information.
  • the terminal acquires the first propagation distance information, and determines the current window offset from the first mapping relationship information according to the first propagation distance information.
  • the terminal determines the current PUR transmission resource block according to the second configuration information and the current window offset, and transmits uplink data through the current PUR transmission resource block.
  • situation two can be exemplified as the process shown in FIG. 11 .
  • the method may further include the following steps: the network device Send the second mapping relationship information to the terminal.
  • the method may further include the following steps: the terminal Obtain second mapping relationship information from the network device.
  • the second mapping relationship information may be indicated by system broadcast information or RRC dedicated signaling.
  • the network device sends the second mapping relationship information to the terminal through system broadcast information or RRC dedicated signaling.
  • the terminal determining the current window offset according to the first configuration information may include the following steps: the terminal determines the current window offset from the second mapping relationship information according to the current common timing advance; The current common timing advance change rate determines the current common timing advance; and the terminal determines the current window offset from the second mapping relationship information according to the current common timing advance.
  • the terminal can use the current common timing advance to index the corresponding information from the second mapping relationship information.
  • the window offset is used as the current window offset, thereby further ensuring that the offset of the downlink search space window will be adaptively adjusted with the continuous change of the propagation distance between the terminal and the satellite each time the terminal delays starting the downlink search space, so as to realize the network equipment Adaptive adjustment of the offset of the downlink search space window with the terminal, and always ensuring that the network device and the terminal reach an agreement on the offset of the downlink search space window.
  • T com T 0 + ⁇ t
  • T com represents the current common time advance
  • T 0 represents the initial common time advance, which is configured by the network
  • ⁇ represents the change rate of the current common time advance
  • t represents the time size.
  • the network device in “situation 1" can also be used to instruct the terminal to update the current window offset by delivering the MAC CE, which will not be repeated here.
  • the network device sends the second mapping relationship information to the terminal through system broadcast information or RRC dedicated signaling. Then, the network device sends the first configuration information to the terminal through RRC dedicated signaling or MAC CE.
  • the first configuration information includes the current public timing advance.
  • the terminal For the terminal, first, the terminal receives system broadcast information or RRC dedicated signaling from the network device to obtain the second mapping relationship information. Secondly, the terminal receives RRC dedicated signaling or MAC CE from the network device to obtain the first configuration information. The first configuration information includes the current public timing advance. Finally, the terminal determines the current window offset from the second mapping relationship information according to the current common timing advance.
  • situation three can be exemplified as the flow shown in FIG. 12 .
  • the network device sends the second mapping relationship information to the terminal through system broadcast information or RRC dedicated signaling. Then, the network device sends the first configuration information to the terminal through system broadcast information or RRC dedicated signaling.
  • the first configuration information includes the current common timing advance change rate.
  • the terminal receives system broadcast information or RRC dedicated signaling from the network device to obtain the second mapping relationship information.
  • the terminal receives system broadcast information or RRC dedicated signaling from the network device to obtain the first configuration information.
  • the first configuration information includes the current common timing advance change rate.
  • the terminal determines the current common timing advance according to the rate of change of the current common timing advance.
  • the terminal determines the current window offset from the second mapping relationship information according to the current common timing advance.
  • situation three can be exemplified as the flow shown in FIG. 13 .
  • the terminal or network device includes corresponding hardware structures and/or software modules for executing each function.
  • the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software-driven hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • the terminal or network device may be divided into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated units can be implemented in the form of hardware, and can also be implemented in the form of software program modules. It should be noted that, the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division manners in actual implementation.
  • FIG. 14 provides a block diagram of functional units of a device for determining a window offset.
  • the window offset determination apparatus 1400 is applied to a terminal in a non-terrestrial network communication system, and specifically includes: a processing unit 1402 and a communication unit 1403 .
  • the processing unit 1402 is used to control and manage the actions of the terminal.
  • the processing unit 1402 is used to support the terminal to perform the steps in FIG. 7 , FIG. 8 , FIG. 9 , FIG. 11 , FIG. 12 or FIG. other processes of the technical solution.
  • the communication unit 1403 is used to support communication between the terminal and other devices in the non-terrestrial network communication system.
  • the window offset determination apparatus 1400 may further include a storage unit 1401 for storing program codes and data of the terminal.
  • the processing unit 1402 may be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (application-specific integrated circuit) integrated circuit, ASIC), field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure.
  • the processing unit 1402 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1403 may be a communication interface, a transceiver, a transceiver circuit, etc., and the storage unit 1401 may be a memory.
  • the processing unit 1402 is a processor
  • the communication unit 1403 is a communication interface
  • the storage unit 1401 is a memory
  • the window offset determination apparatus 1400 involved in this embodiment of the present application may be the terminal shown in FIG. 16 .
  • the processing unit 1402 is configured to perform any step performed by the terminal in the above method embodiments, and when performing data transmission such as sending, the communication unit 1403 can be selectively invoked to complete corresponding operations. A specific description will be given below.
  • the processing unit 1402 is configured to: obtain first configuration information from the network device; determine a current window offset according to the first configuration information, where the current window offset is used to indicate that the downlink search space window corresponding to the currently preconfigured uplink resource starts with The offset of the time delay start, and the start time is the end position of the currently pre-configured uplink resources.
  • each operation may refer to the descriptions in the method embodiments shown in FIG. 7 , FIG. 8 , FIG. 9 , FIG. 11 , FIG. 12 or FIG. 13 , and details are not repeated here.
  • the first configuration information of the network device is acquired, and the current window offset is determined according to the first configuration information. Since the current window offset is used to indicate the offset of the downlink search space window corresponding to the currently preconfigured uplink resource with the start time delay, and the start time is the end position of the current preconfigured uplink resource, it is beneficial to ensure that the terminal
  • the offset of the downlink search space window will be adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite each time the delay starts, so as to realize the adaptation of the offset of the downlink search space window between the network equipment and the terminal Adjust, and always ensure that the network device and the terminal reach an agreement on the offset of the downlink search space window.
  • the first configuration information is indicated by at least one of radio resource control RRC dedicated signaling, medium access control control element MAC CE, and system broadcast information.
  • the first configuration information includes one of the following: starting value index information and value validating delay information, first mapping relationship information, current common timing advance, and current common timing advance change rate.
  • the starting value index information is used to determine the target value in the value list information, and the value list information is configured by the network; the value validating delay information is used to instruct the terminal to use the target value as the current value.
  • the delay of the window offset; the value list information is used to indicate a list composed of multiple window offsets in order.
  • the value list information satisfies at least one of the following manners: the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system, and the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system.
  • the order in which the values are arranged corresponds to the motion position of the satellite.
  • the processing unit 1402 is further configured to: acquire information from the network The first information of the device, where the first information includes value list information.
  • the first information is indicated by system broadcast information or RRC dedicated signaling.
  • the processing unit 1402 is specifically configured to: determine the target value from the value list information according to the initial value index information; After the delay information times out, the target value is taken as the current window offset.
  • the first information further includes update cycle information; the update cycle information is used to indicate a cycle in which the terminal updates the current window offset to the next value where the target value is located at the location of the value list information , and the period starts from the time when the value takes effect and the delay information times out.
  • the processing unit 1402 is further configured to: receive the MAC CE from the network device to obtain first indication information, where the first indication information is used to indicate the terminal Update the current window offset to the next value where the target value is located in the value list information.
  • the first mapping relationship information is used to indicate the mapping relationship between the propagation distance of the terminal to the satellite in the non-terrestrial network communication system and the window offset.
  • the processing unit 1402 before acquiring the first configuration information from the network device, is further configured to: acquire the second configuration for PUR transmission from the network device
  • the second configuration information includes PUR transmission period information, resource configuration information of the PUR transmission opportunity, and mapping relationship information between the PUR transmission resource block and the window offset.
  • the second configuration information is indicated by RRC dedicated signaling.
  • the processing unit 1402 is specifically configured to: acquire first propagation distance information, where the first propagation distance information is used to indicate the current location information of the terminal and the satellite The propagation distance between them; the current window offset is determined from the first mapping relationship information according to the first propagation distance information.
  • the processing unit 1402 is further configured to: determine the current PUR according to the second configuration information and the current window offset The resource block is transmitted, and uplink data is transmitted through the current PUR transmission resource block.
  • the current common timing advance is used to determine the current window offset from the second mapping relationship information, and the second mapping relationship information is configured by the network; the current common timing advance change rate is used to determine the current common time Advance; the second mapping relationship information is used to indicate the mapping relationship between the common timing advance and the window offset.
  • the processing unit 1402 is further configured to: acquire The second mapping relationship information from the network device.
  • the second mapping relationship information is indicated by system broadcast information or RRC dedicated signaling.
  • the processing unit 1402 is specifically configured to: determine the current window offset from the second mapping relationship information according to the current common timing advance; or, The current common timing advance is determined according to the rate of change of the current common timing advance; and the current window offset is determined from the second mapping relationship information according to the current common timing advance.
  • FIG. 15 provides a block diagram of functional units of another apparatus for determining a window offset.
  • the window offset determination apparatus 1500 is applied to a network device in a non-terrestrial network communication system, and specifically includes: a processing unit 1502 and a communication unit 1503 .
  • the processing unit 1502 is used to control and manage the actions of the network device.
  • the processing unit 1502 is used to support the network device to perform the steps in FIG. 7 , FIG. 8 , FIG. 9 , FIG. 11 , FIG. 12 or FIG. Other processes of the described technical solution.
  • the communication unit 1503 is used to support communication between the network device and other devices in the non-terrestrial network communication system.
  • the window offset determination apparatus 1500 may further include a storage unit 1501 for storing program codes and data of the network device.
  • the processing unit 1502 may be a processor or a controller, for example, a CPU, DSP, ASIC, FPGA or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure.
  • the processing unit 1502 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1503 may be a communication interface, a transceiver, a transceiver circuit, etc., and the storage unit 1501 may be a memory. When the processing unit 1502 is a processor, the communication unit 1503 is a communication interface, and the storage unit 1501 is a memory, the window offset determination apparatus 1500 involved in this embodiment of the present application may be the network device shown in FIG. 17 .
  • the processing unit 1502 is configured to perform any step performed by the network device in the above method embodiments, and when performing data transmission such as sending, the communication unit 1503 can be selectively invoked to complete corresponding operations. A detailed description will be given below.
  • the processing unit 1502 is configured to: send first configuration information to the terminal, where the first configuration information is used to determine the current window offset, and the current window offset is used to indicate that the downlink search space window corresponding to the currently preconfigured uplink resource starts at the start time.
  • the offset of the delayed start, and the start time is the end position of the currently pre-configured uplink resources.
  • each operation may refer to the descriptions in the method embodiments shown in FIG. 7 , FIG. 8 , FIG. 9 , FIG. 11 , FIG. 12 or FIG. 13 , and details are not repeated here.
  • the first configuration information is sent to the terminal, and the first configuration information is used to determine the current window offset. Since the current window offset is used to indicate the offset of the downlink search space window corresponding to the currently preconfigured uplink resource with the start time delay, and the start time is the end position of the current preconfigured uplink resource, it is beneficial to ensure that the terminal
  • the offset of the downlink search space window will be adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite each time the delay starts, so as to realize the adaptation of the offset of the downlink search space window between the network equipment and the terminal Adjust, and always ensure that the network device and the terminal reach an agreement on the offset of the downlink search space window.
  • the first configuration information is indicated by at least one of radio resource control RRC dedicated signaling, medium access control control element MAC CE, and system broadcast information.
  • the first configuration information includes one of the following: starting value index information and value validating delay information, first mapping relationship information, current common timing advance, and current common timing advance change rate.
  • the starting value index information is used to determine the target value in the value list information, and the value list information is configured by the network; the value validating delay information is used to instruct the terminal to use the target value as the current value.
  • the delay of the window offset; the value list information is used to indicate a list composed of multiple window offsets in order.
  • the value list information satisfies at least one of the following ways: the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system, and the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system.
  • the arrangement order between the values has a corresponding relationship with the motion position of the satellite.
  • the processing unit 1502 is further configured to: send the first configuration information to the terminal. information, the first information includes value list information.
  • the first information is indicated by system broadcast information or RRC dedicated signaling.
  • the first information further includes update cycle information; the update cycle information is used to indicate a cycle in which the terminal updates the current window offset to the next value where the target value is located at the location of the value list information , and the period starts from the time when the value takes effect and the delay information times out.
  • the processing unit 1502 is further configured to: send first indication information to the terminal through the MAC CE, where the first indication information is used to instruct the terminal to update the current window offset The next value for the target value at the location of the value list information.
  • the first mapping relationship information is used to indicate the mapping relationship between the propagation distance of the terminal to the satellite in the non-terrestrial network communication system and the window offset.
  • the processing unit 1502 is further configured to: send the second configuration information for PUR transmission to the terminal, the first The second configuration information includes the PUR transmission period information, the resource configuration information of the PUR transmission opportunity, and the mapping relationship information between the PUR transmission resource block and the window offset.
  • the second configuration information is indicated by RRC dedicated signaling.
  • the current common timing advance is used to determine the current window offset from the second mapping relationship information, and the second mapping relationship information is configured by the network; the rate of change of the current common timing advance is used to determine the current common timing advance
  • the second mapping relationship information is used to indicate the mapping relationship between the common timing advance and the window offset.
  • the processing unit 1502 is further configured to: send the second Mapping relationship information.
  • the second mapping relationship information is indicated by system broadcast information or RRC dedicated signaling.
  • FIG. 16 is a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • the terminal 1600 includes a processor 1610 , a memory 1620 , a communication interface 1630 and at least one communication bus for connecting the processor 1610 , the memory 1620 , and the communication interface 1630 .
  • the memory 1620 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (PROM) or portable Read-only memory (compact disc read-only memory, CD-ROM), the memory 1620 is used for related instructions and data.
  • RAM random access memory
  • ROM read-only memory
  • PROM erasable programmable read-only memory
  • CD-ROM portable Read-only memory
  • Communication interface 1630 is used to receive and transmit data.
  • the processor 1610 may be one or more CPUs, and if the processor 1610 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.
  • the processor 1610 in the terminal 1600 is configured to read one or more programs 1621 stored in the memory 1620 to perform the following steps: obtain the first configuration information from the network device; determine the current window offset according to the first configuration information, the current The window offset is used to indicate the offset of the downlink search space window corresponding to the currently preconfigured uplink resource, which is delayed from the start time, and the start time is the end position of the currently preconfigured uplink resource.
  • each operation may refer to the descriptions in the method embodiments shown in FIG. 7 , FIG. 8 , FIG. 9 , FIG. 11 , FIG. 12 or FIG. 13 , and details are not repeated here.
  • the first configuration information of the network device is acquired, and the current window offset is determined according to the first configuration information. Since the current window offset is used to indicate the offset of the downlink search space window corresponding to the currently preconfigured uplink resource with the start time delay, and the start time is the end position of the current preconfigured uplink resource, it is beneficial to ensure that the terminal
  • the offset of the downlink search space window will be adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite each time the delay starts, so as to realize the adaptation of the offset of the downlink search space window between the network equipment and the terminal Adjust, and always ensure that the network device and the terminal reach an agreement on the offset of the downlink search space window.
  • the first configuration information is indicated by at least one of radio resource control RRC dedicated signaling, medium access control control element MAC CE, and system broadcast information.
  • the first configuration information includes one of the following: starting value index information and value validating delay information, first mapping relationship information, current common timing advance, and current common timing advance change rate.
  • the starting value index information is used to determine the target value in the value list information, and the value list information is configured by the network; the value validating delay information is used to instruct the terminal to use the target value as the current value.
  • the delay of the window offset; the value list information is used to indicate a list composed of multiple window offsets in order.
  • the value list information satisfies at least one of the following manners: the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system, and the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system.
  • the order in which the values are arranged corresponds to the motion position of the satellite.
  • the processor 1610 before acquiring the first configuration information from the network device, the processor 1610 is configured to read the memory 1620
  • the stored one or more programs 1621 also perform the following steps: acquiring first information from the network device, where the first information includes value list information.
  • the first information is indicated by system broadcast information or RRC dedicated signaling.
  • the processor 1610 is configured to read one or more programs 1621 stored in the memory 1620 and specifically perform the following steps: according to the starting value index The information determines the target value from the value list information; after the time-out of the value effective delay information, the target value is used as the current window offset.
  • the first information further includes update cycle information; the update cycle information is used to indicate a cycle in which the terminal updates the current window offset to the next value where the target value is located at the location of the value list information , and the period starts from the time when the value takes effect and the delay information times out.
  • the processor 1610 is configured to read one or more programs 1621 stored in the memory 1620 and further perform the following steps: receiving the MAC address from the network device The CE obtains first indication information, where the first indication information is used to instruct the terminal to update the current window offset to the next value where the target value is located at the location of the value list information.
  • the first mapping relationship information is used to indicate the mapping relationship between the propagation distance of the terminal to the satellite in the non-terrestrial network communication system and the window offset.
  • the processor 1610 before acquiring the first configuration information from the network device, the processor 1610 is configured to read one or more programs 1621 stored in the memory 1620 The following steps are also performed: acquiring second configuration information for PUR transmission from the network device, where the second configuration information includes PUR transmission period information, resource configuration information of PUR transmission occasions, and a mapping relationship between PUR transmission resource blocks and window offsets information.
  • the second configuration information is indicated by RRC dedicated signaling.
  • the processor 1610 is configured to read one or more programs 1621 stored in the memory 1620 and specifically perform the following steps: acquiring the first propagation distance information , the first propagation distance information is used to indicate the propagation distance between the current location information of the terminal and the satellite; the current window offset is determined from the first mapping relationship information according to the first propagation distance information.
  • the processor 1610 is configured to read one or more programs 1621 stored in the memory 1620 and further execute the following Step: Determine the current PUR transmission resource block according to the second configuration information and the current window offset, and perform uplink data transmission through the current PUR transmission resource block.
  • the current common timing advance is used to determine the current window offset from the second mapping relationship information, and the second mapping relationship information is configured by the network; the current common timing advance change rate is used to determine the current common time Advance; the second mapping relationship information is used to indicate the mapping relationship between the common timing advance and the window offset.
  • the processor 1610 before acquiring the first configuration information from the network device, the processor 1610 is configured to read the memory
  • the one or more programs 1621 stored in 1620 also perform the following steps: acquiring second mapping relationship information from the network device.
  • the second mapping relationship information is indicated by system broadcast information or RRC dedicated signaling.
  • the processor 1610 is configured to read one or more programs 1621 stored in the memory 1620 and specifically perform the following steps: according to the current common timing advance Determine the current window offset from the second mapping relationship information; or, determine the current common timing advance according to the rate of change of the current common timing advance; and determine the current window offset from the second mapping relationship information according to the current common timing advance quantity.
  • FIG. 17 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the network device 1700 includes a processor 1710 , a memory 1720 , a communication interface 1730 and at least one communication bus for connecting the processor 1710 , the memory 1720 , and the communication interface 1730 .
  • the memory 1720 includes, but is not limited to, RAM, ROM, PROM, or CD-ROM, and the memory 1720 is used to store related instructions and data.
  • Communication interface 1730 is used to receive and transmit data.
  • the processor 1710 may be one or more CPUs, and if the processor 1710 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.
  • the processor 1710 in the network device 1700 is configured to read one or more programs 1721 stored in the memory 1720 to perform the following steps: send first configuration information to the terminal, the first configuration information is used to determine the current window offset, the current The window offset is used to indicate the offset of the downlink search space window corresponding to the currently preconfigured uplink resource, which is delayed from the start time, and the start time is the end position of the currently preconfigured uplink resource.
  • each operation may refer to the descriptions in the method embodiments shown in FIG. 7 , FIG. 8 , FIG. 9 , FIG. 11 , FIG. 12 or FIG. 13 , and details are not repeated here.
  • the first configuration information is sent to the terminal, and the first configuration information is used to determine the current window offset. Since the current window offset is used to indicate the offset of the downlink search space window corresponding to the currently preconfigured uplink resources, the start time is delayed from the start time, and the start time is the end position of the current preconfigured uplink resources, which is beneficial to ensure that the terminal
  • the offset of the downlink search space window will be adaptively adjusted with the constant change of the propagation distance between the terminal and the satellite each time the delay starts, so as to realize the adaptation of the offset of the downlink search space window between the network equipment and the terminal Adjust, and always ensure that the network device and the terminal reach an agreement on the offset of the downlink search space window.
  • the first configuration information is indicated by at least one of radio resource control RRC dedicated signaling, medium access control control element MAC CE, and system broadcast information.
  • the first configuration information includes one of the following: starting value index information and value validating delay information, first mapping relationship information, current common timing advance, and current common timing advance change rate.
  • the starting value index information is used to determine the target value in the value list information, and the value list information is configured by the network; the value validating delay information is used to instruct the terminal to use the target value as the current value.
  • the delay of the window offset; the value list information is used to indicate a list composed of multiple window offsets in order.
  • the value list information satisfies at least one of the following ways: the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system, and the value in the value list information is determined by the propagation distance between the terminal and the satellite in the non-terrestrial network communication system.
  • the arrangement order between the values has a corresponding relationship with the motion position of the satellite.
  • the processor 1710 before sending the first configuration information to the terminal, the processor 1710 is configured to read the data stored in the memory 1720
  • the one or more programs 1721 also perform the following steps: sending first information to the terminal, where the first information includes value list information.
  • the first information is indicated by system broadcast information or RRC dedicated signaling.
  • the first information further includes update cycle information; the update cycle information is used to indicate a cycle in which the terminal updates the current window offset to the next value where the target value is located at the location of the value list information , and the period starts from the time when the value takes effect and the delay information times out.
  • the processor 1710 after sending the first configuration information to the terminal, is configured to read one or more programs 1721 stored in the memory 1720 and further perform the following steps: sending the first indication information to the terminal through the MAC CE , and the first indication information is used to instruct the terminal to update the current window offset to the next value where the target value is located at the location of the value list information.
  • the first mapping relationship information is used to indicate the mapping relationship between the propagation distance of the terminal to the satellite in the non-terrestrial network communication system and the window offset.
  • the processor 1710 before sending the first configuration information to the terminal, the processor 1710 is configured to read one or more programs 1721 stored in the memory 1720 and also execute The following steps: send second configuration information for PUR transmission to the terminal, where the second configuration information includes PUR transmission period information, resource configuration information of PUR transmission occasions, and mapping relationship information between PUR transmission resource blocks and window offsets.
  • the second configuration information is indicated by RRC dedicated signaling.
  • the current common timing advance is used to determine the current window offset from the second mapping relationship information, and the second mapping relationship information is configured by the network; the rate of change of the current common timing advance is used to determine the current common timing advance
  • the second mapping relationship information is used to indicate the mapping relationship between the common timing advance and the window offset.
  • the processor 1710 before sending the first configuration information to the terminal, the processor 1710 is configured to read the data stored in the memory 1720
  • the one or more programs 1721 also perform the following steps: sending the second mapping relationship information to the terminal.
  • the second mapping relationship information is indicated by system broadcast information or RRC dedicated signaling.
  • An embodiment of the present application further provides a chip, wherein the chip includes a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the execution of the terminal or network device in the above method embodiments. some or all of the steps described.
  • Embodiments of the present application further provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the terminal as described in the foregoing method embodiments or some or all of the steps described by the network device.
  • the embodiments of the present application also provide a computer program product, wherein the computer program product includes a computer program, and the computer program is operable to cause the computer to execute part or all of the description of the terminal or network device in the foregoing method embodiments step.
  • the computer program product may be a software installation package.
  • the steps of the method or algorithm described in the embodiments of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions.
  • the software instructions may be composed of corresponding software modules, and the software modules may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disks, removable hard disks, compact disks (CD-ROMs) or any other form known in the art. in the storage medium.
  • An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and storage medium may reside in an ASIC.
  • the ASIC may be located in a terminal or network device.
  • the processor and the storage medium may also exist in the terminal or network device as discrete components.
  • the functions described in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented in software, it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions can be sent from one website site, computer, server, or data center to another website site, computer, server by wire (eg, coaxial cable, fiber optic, DSL) or wireless (eg, infrared, wireless, microwave, etc.) or data center for transmission.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media integrated.

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  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
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  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

Des modes de réalisation de la présente demande concernent un procédé et un appareil de détermination de décalage de fenêtre, un terminal et un dispositif de réseau. Le procédé et l'appareil sont appliqués à un système de communication de réseau non terrestre, et le système de communication de réseau non terrestre comprend le terminal et le dispositif de réseau. Le procédé comprend les étapes suivantes : le dispositif de réseau envoie des premières informations de configuration au terminal ; et le terminal obtient les premières informations de configuration en provenance du dispositif de réseau, et détermine le décalage de fenêtre actuel selon les premières informations de configuration. Puisque le décalage de fenêtre actuel est utilisé pour indiquer un décalage lorsqu'une fenêtre d'espace de recherche de liaison descendante correspondant à la ressource de liaison montante préconfigurée actuelle est démarrée d'une manière retardée à l'instant de départ, et l'instant de départ est la position finale de la ressource de liaison montante préconfigurée actuelle, il est assuré que le décalage, à chaque fois que le terminal démarre de manière retardée la fenêtre d'espace de recherche de liaison descendante, sera ajusté de manière adaptative lorsque la distance de propagation entre le terminal et un satellite change continuellement, ce qui permet d'accomplir un ajustement adaptatif du décalage de fenêtre entre le dispositif de réseau et le terminal et de toujours assurer la cohérence du décalage de fenêtre entre le dispositif de réseau et le terminal.
PCT/CN2021/132472 2020-12-07 2021-11-23 Procédé et appareil de détermination de décalage de fenêtre, terminal et dispositif de réseau WO2022121680A1 (fr)

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US18/256,296 US20240040527A1 (en) 2020-12-07 2021-11-23 Method for window offset determination and terminal
EP21902387.6A EP4258777A1 (fr) 2020-12-07 2021-11-23 Procédé et appareil de détermination de décalage de fenêtre, terminal et dispositif de réseau

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CN202011421462.2A CN114614876B (zh) 2020-12-07 2020-12-07 窗口偏移量确定方法与装置、终端和网络设备

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